Correct Option: B

As the first man to escape Earth’s gravitation field and achieve orbit, Yuri Gagarin holds the title of first human being in space. On 12 April, 1961 in his craft Vostok 1, Gagarin completed a single orbit of the Earth. Performed at an altitude of 187 3/4 miles (302 kilometers), the orbital rotation took 108 minutes at 18,000 miles an hour. For this he was nominated a Hero of the Soviet Union.